Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: question: Nomeie o signo do zodíaco para chithirai
 ###Tabelas: CREATE TABLE commentators_and_spokespersons (commentators_and_spokespersons_id AUTO_INCREMENT PRIMARY KEY, Year(s) INT, Final television commentator VARCHAR, Radio commentator VARCHAR, Spokesperson VARCHAR, Semi-final television commentator VARCHAR, Semi-final second television commentator VARCHAR) CREATE TABLE norwegian_americans_by_state (norwegian_americans_by_state_id AUTO_INCREMENT PRIMARY KEY, State VARCHAR, Norwegian Americans (1980) INT, Percent (1980) VARCHAR, Norwegian Americans (1990) INT, Percent (1990) VARCHAR, Norwegian Americans (2000) INT, Percent (2000) VARCHAR, Norwegian Americans (2009) INT, Percent (2009) VARCHAR) CREATE TABLE electoral_districts (electoral_districts_id AUTO_INCREMENT PRIMARY KEY, District INT, Region VARCHAR, Communes VARCHAR, Population (2002 census) INT, % of total population VARCHAR, VAP INT, Enrolled INT, Total votes INT, Valid votes INT, Turnout VARCHAR, E/VAP VARCHAR, T/VAP VARCHAR, V/VAP VARCHAR) CREATE TABLE radio_stations (radio_stations_id AUTO_INCREMENT PRIMARY KEY, Frequency VARCHAR, Call sign VARCHAR, Branding VARCHAR, Format VARCHAR, Owner VARCHAR) CREATE TABLE months (months_id AUTO_INCREMENT PRIMARY KEY, Months in Malayalam Era VARCHAR, In Malayalam VARCHAR, Gregorian Calendar VARCHAR, Tamil calendar VARCHAR, Saka era VARCHAR, Sign of Zodiac VARCHAR)  
SELECT Sign of Zodiac FROM months WHERE Tamil calendar = Chithirai